scholarly journals Relationship between Maxillary Arch Shape and Maxillary Labial Bone Dimensions: A Pilot Study

2021 ◽  
Author(s):  
Ahmad Assari ◽  
Shereen Shokry ◽  
Dana Al-Senan ◽  
Tasnim Alsbaih ◽  
Mada Alanazi ◽  
...  
Keyword(s):  
Wall Thickness ◽  
Alveolar Bone ◽  
The Other ◽  
Cone Beam ◽  
Facial Bone ◽  
Anterior Portion ◽  
Significant Difference ◽  
Bone Dimensions ◽  
Maxillary Arch ◽  
Arch Shape

Abstract OBJECTIVE: To determine whether there is any relationship between the thickness of the labial alveolar bone wall in the anterior portion of the maxilla and arch shape.MATERIALS AND METHODS: Thirty patients (age, 12–53 years) were selected from archived cone beam computed tomography (CBCT) cases. All maxillary front teeth were present in all the cases. The distance between the cementoenamel junction (CEJ) and the facial bone crest and the thickness of the labial alveolar bone wall at distances of 1, 3, and 5 mm apical to the facial bone crest were measured.RESULTS: The distance between the CEJ and the facial bone crest ranged from 2.24 mm and 3.08 mm. No significant differences were found between the thickness of the bone wall at 1, 3, and 5 mm apical to the crest. A significant difference was found between the U-shaped arch on one side and the V-shaped and square-shaped arches on the other side. The U-shaped arch and labial bone wall thickness were correlated at the 1-mm distance (F = (8, 276) = 3.24, p = 0.002). U-shaped and V-shaped arches were common in women, whereas square-shaped arches were common in men (χ2 = 105.5, p = 0.000).CONCLUSION: Our study is the first to associate arch shape and labial alveolar bone wall thickness.CLINICAL RELEVANCE: The association between the U-shaped arch and bone wall thickness may constitute a new indicator for the tendency of the labial alveolar bone to resorb after extraction and placement of endo-osseous implants.

scholarly journals A Cone-beam Computed Tomography Evaluation of Mandibular Anterior Alveolar Bone Dimensions in Class I and Class II Skeletal Patterns

2021 ◽  
Vol 12 (3) ◽  
pp. 230-233
Author(s):  
Piyush Gupta ◽  
Nivedita Sahoo ◽  
Kavuda Nagarjuna Prasad ◽  
MS Rami Reddy ◽  
Saranya Sreedhar ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Alveolar Bone ◽  
Class Ii ◽  
Class I ◽  
Cone Beam ◽  
Bone Dimensions

scholarly journals The Relationship between Maxillary Sinus Lateral Wall Thickness, Alveolar Bone Loss, and Demographic Variables: A Cross-Sectional Cone-Beam Computerized Tomography Study

2018 ◽  
Vol 28 (2) ◽  
pp. 109-114 ◽  
Author(s):  
Tuba Talo Yildirim ◽  
Güliz Nigar Güncü ◽  
Mehmet Colak ◽  
Tolga Fikret Tözüm
Keyword(s):  
Bone Loss ◽  
Maxillary Sinus ◽  
Computerized Tomography ◽  
Wall Thickness ◽  
Alveolar Bone ◽  
Lateral Wall ◽  
Cone Beam ◽  
Cone Beam Computerized Tomography ◽  
And Gender ◽  
The Relationship

Objectives: Sinus floor elevation and augmentation surgery is widely used as a reliable procedure to increase insufficient bone height in the posterior maxillary area. The purpose of the present clinical study was to determine the associations between periodontal bone loss (PBL), maxillary sinus lateral bone wall thickness, age, and gender using cone-beam computerized tomography (CBCT). Materials and Methods: The current retrospective study consists of 716 maxillary sinus CBCT images of 358 patients. The CBCT scans were assessed to detect the relationship between lateral wall thickness and PBL. ANOVA and Student t test analysis were used to determine the influence of PBL on sinus lateral wall thickness. Results: Sinus lateral wall thickness was significantly associated with PBL (p < 0.05) at 3, 13, and 15 mm height. There was no significant association between lateral wall thickness and gender (p > 0.05). However, there was a significant association between lateral wall thickness at 3 and 13 mm and age (p < 0.05). There were significant associations between PBL and age (p < 0.001), and PBL and gender (p < 0.05). Conclusions: PBL might have an association with maxillary sinus lateral bone wall thickness. Further studies are needed to confirm this possible relationship.

scholarly journals Analysis of the Buccal Bone Plate, Root Inclination and Alveolar Bone Dimensions in the Jawbone. A Descriptive Study Using Cone-Beam Computed Tomography

2019 ◽  
Vol 10 (2) ◽  
Author(s):  
Joana Gomes dos Santos ◽  
Ana Paula Oliveira Reis Durão ◽  
António Cabral de Campos Felino ◽  
Ricardo Manuel Casaleiro Lobo de Faria de Almeida
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Alveolar Bone ◽  
Descriptive Study ◽  
Bone Plate ◽  
Cone Beam ◽  
Bone Dimensions

scholarly journals Assessment of Labial Alveolar Bone Thickness in Maxillary Central Incisor using Cone Beam Computed Tomography

2021 ◽  
Vol 5 (1) ◽  
pp. 2-6
Author(s):  
Shaili Pradhan ◽  
Rejina Shrestha ◽  
Ranjita Shrestha Gorkhali ◽  
Pramod Kumar Koirala
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Alveolar Bone ◽  
Cone Beam ◽  
Central Incisor ◽  
Bone Thickness ◽  
Cross Sectional ◽  
Dental Surgery ◽  
Maxillary Central Incisor ◽  
Significant Difference

Introduction: The maxillary anterior region is becoming a major concern due to its aesthetic relevance. The buccal bone thickness is important for implant placement, orthodontic treatment and restorative treatment. Objective: To assess the thickness of alveolar bone in the maxillary central incisor using cone beam computed tomography (CBCT). Methods: A cross-sectional observational study was conducted at Department of Dental Surgery, Bir Hospital where CBCT of 53 samples from July 2019 till December 2019, the archived CBCT images was assessed retrospectively. The thickness of the labial bone in a direction perpendicular to the outer surface of the tooth root was measured at a distance of 2 mm from the cementoenamel junction (CEJ). The measurement was taken thrice and the mean measurement was considered. Results: The labial alveolar bone thickness in maxillary central incisor was found to be 0.55±0.27 mm at a distance of 2 mm from the CEJ. Only 2 (3.8%) of the samples had an alveolar thickness of >1 mm. No statistically significant difference was found with respect to gender and age. Conclusion: The average thickness of the labial alveolar bone in maxillary central incisor using cone beam computed tomography was found to be thin. 

scholarly journals Quantitative Analysis of the Relationship between Maxillary Incisors and the Incisive Canal by Cone-Beam Computed Tomography in an Adult Population of Mangaluru

2021 ◽  
Vol 8 (2) ◽  
Author(s):  
Vaishnavi D ◽  
◽  
Harshitha V ◽  
Kishore K ◽  
◽  
...  
Keyword(s):  
Orthodontic Treatment ◽  
Alveolar Bone ◽  
Root Resorption ◽  
Interindividual Variation ◽  
Cone Beam ◽  
Maxillary Incisor ◽  
Incisive Canal ◽  
Anterior Teeth ◽  
Significant Difference ◽  
Maxillary Incisors

Background: Maxillary anterior teeth play a crucial role in aesthetics, phonetics, and mastication. For successful orthodontic treatment evaluating the morphology of the alveolar bone and incisive canal would help in avoiding root resorption, dehiscence, and fenestration. This study is aimed to research the configurational relationships among maxillary incisors, alveolar bone, and incisive canal through Cone Beam Computerated Tomography (CBCT). Methods: CBCT images of 35 orthodontic patients were evaluated for length of the canal (L); angles between the palatal plane and the maxillary alveolar border (01),the incisive canal (02), and maxillary incisor (03); distance from the right maxillary incisor to the incisive canal (D). All the measurements were performed on sagittal plane with the exception of (D) which was made on axial plane. Statistical analysis was performed on the above parameters using two sample test and Pearson’s correlation analysis. Results: There was no statistically significant difference between males and females for all the variables although there were large interindividual variation. There was a positive moderate correlation between 01 and 02 (0.480), 01 and 03 (0.487), 02 and 03 (0.345). The mean value for L and D were 10.38mm and 4.14mm respectively. Conclusion: There exists a large interindividual variability for incisive canal, proximity of incisors with that of incisive canal which could not be precisely predicted by the conventional cephalograms. The results of the study could be helpful clinically in planning orthodontic treatment for significant intrusion and retraction of maxillary incisors

scholarly journals Effect of Obesity and/or Ligature-induced Periodontitis on Aortic Wall Thickness in Wistar Rats.

2020 ◽  
Vol 33 (1) ◽  
pp. 50-55
Author(s):  
Andressa Moreira ◽  
Alessandra Nicolini ◽  
Eduardo Gaio ◽  
Fernanda Visioli ◽  
Cassiano Rösing ◽  
...  
Keyword(s):  
Body Weight ◽  
Periodontal Disease ◽  
Wall Thickness ◽  
Wistar Rats ◽  
Aortic Wall ◽  
Alveolar Bone ◽  
Cafeteria Diet ◽  
Control Group ◽  
Significant Difference ◽  
Aortic Wall Thickness

The purpose of this study was to evaluate aortic wall thickness after periodontal disease and/or obesity induction in a Wistar rat model.Sixty male Wistar rats were randomly divided into four groups: control (CT), periodontal disease (PD), obesity (OB), and obesity plus periodontal disease (OB+PD). Groups OB and OB+PD received cafeteria diet for 17 weeks. After they had acquired obesity (week 12), periodontal disease was induced by placing a silk ligature on the maxillary right second molar of groups PD and OB+PD. During the experimental period, body weight and Lee index were assessed. Mean alveolar bone loss (ABL) was evaluated, and aortas were prepared for histometric analysis of the aortic wall by ImageJ software. Body weight and Lee index increased in rats exposed to cafeteria diet. Mean ABL was higher in Groups PD and OB+PD than in control and OB (p<0.05). ABL was 18% higher in Group OB+PD than in Group PD, with statistically significant difference (p<0.001). Aortas were thicker in Groups OB and OB+PD than in control and PD groups, respectively (2.31mm ± 0.28 and 2.33 ± 0.29 vs. 2.18 ± 0.26 and 2.14 ± 0.27). Group OB differed significantly from the control group (p=0.036), and OB+PD and OB differed significantly from PD (p=0.004 and p= 0.001, respectively). Obesity alters aortic wall thickness in Wistar rats. However, the presence of periodontal disease did not affect the aortic wall thickness under the conditions of the present study.

scholarly journals Evaluation of Mandibular First Molars’ Axial Inclination and Alveolar Morphology in Different Facial Patterns: A CBCT Study

2020 ◽  
Vol 14 (02) ◽  
pp. 250-259 ◽  
Author(s):  
Marcos Cezar Ferreira ◽  
Karina Maria Salvatore de Freitas ◽  
Francyle Simões Herrera-Sanches ◽  
Patrícia Bittencourt dos Santos ◽  
Daniela Garib ◽  
...  
Keyword(s):  
The Other ◽  
Cone Beam ◽  
Bone Morphology ◽  
Mandibular Molar ◽  
Significant Difference ◽  
Mandibular Body ◽  
Facial Pattern ◽  
Group 3 ◽  
Group 2 ◽  
Group 1

Abstract Objective The purpose of this study was to evaluate and compare the axial inclination of the mandibular first molars and their respective bone morphology among individuals with different facial patterns. Materials and Methods The sample comprised the cone beam computed tomographies (CBCTs) of 58 subjects divided into three groups according to the facial patterns: 18 brachyfacial (Group 1), with a mean age of 21.58 years; 23 mesofacial (Group 2), with a mean age of 19.14 years; and 17 dolichofacial subjects (Group 3), with a mean age of 19.09 years. Eight variables were evaluated on CBCT scans of each subject: buccal and lingual mandibular height, cervical and middle mandibular width, inclination of mandibular body, inclination of the mandibular molar buccal surface, molar width, molar angulation and tooth/bone angle. Intergroup comparisons were performed with one-way analysis of variance followed by Tukey tests. Results Buccal mandibular height presented statistically significant difference in the three facial patterns. Lingual mandibular height and mandibular inclination showed to be statistically and significantly smaller in brachyfacial subjects than in the other two groups. Mandibular width presented a statistically significant difference between brachyfacial and mesofacial groups. Negative correlations could be observed between the facial pattern and the buccal and lingual mandibular heights and inclination of the mandibular body. Conclusion Buccal mandibular height was significantly and progressively larger in brachyfacial, mesofacial, and dolichofacial subjects. Lingual mandibular height was significantly smaller in brachyfacial than in mesofacial and dolichofacial subjects. Mandibular width was significantly thicker in brachyfacial than in mesofacial subjects. Brachyfacial subjects had smaller mandibular inclination than mesofacial and dolichofacial subjects.

scholarly journals Assessment of the Mandibular Incisive Canal by Panoramic Radiograph and Cone-Beam Computed Tomography

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Ricardo Raitz ◽  
Elisabeth Shimura ◽  
Israel Chilvarquer ◽  
Marlene Fenyo-Pereira
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Preoperative Planning ◽  
Panoramic Radiograph ◽  
Mental Foramen ◽  
Cone Beam ◽  
Anterior Portion ◽  
Incisive Canal ◽  
Significant Difference ◽  
Examination Methods

Objectives.The region between mental foramens is considered as a zone of choice for implants. However, complications may arise due to an extension anterior to the mental foramen that forms the mandible incisive canal [MIC]. Our goal is to evaluate identification of MIC by both panoramic radiograph [PAN] and cone-beam computed tomography [CBCT].Methods.150 cases with bilateral MIC were analyzed. Images of a radiolucent canal, within the trabecular bone, surrounded by a radiopaque cortical bone representing the canal walls, and extending to the anterior portion beyond the mental foramen, were considered by two independent radiologists as being images of MIC. PAN and CBCT of these cases were evaluated by 2 other radiologists at different times. Agreement between results of examination methods was assessed by the Kappa coefficient. The interexaminer and intramethod rates for detection of MIC were analyzed by the McNemar test. Gender, mandible side, examiner, and type of method were analyzed by the generalized estimating equations [GEE] model.Results.significant difference between examiners [PAN: P=0.146; CBCT:P=0.749] was not observed. Analysis by GEE model showed no significant difference between genders[P=0.411]and examiners[P=0.183]. However, significant difference was observed for identification in both mandible right side[P=0.001], where the identification frequency was higher, and CBCT method[P<0.001].Conclusions.PAN was not shown to be a safe examination to identify MIC. CBCT should always be used in preoperative planning and to reduce the number of complications in implant surgeries.

scholarly journals Alveolar Bone Dimensions of Mandibular Posterior Teeth using Cone Beam Computed Tomography: A Pilot Study

2016 ◽  
Vol 6 (1) ◽  
pp. 9-14 ◽  
Author(s):  
Varun Rajeev Kunte ◽  
Ajay Ramesh Bhoosreddy ◽  
Seema Ajay Bhoosreddy ◽  
Atul Ashok Pandharbale ◽  
Manila Rajaram Shinde ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Alveolar Bone ◽  
Cone Beam ◽  
Bone Augmentation ◽  
Posterior Teeth ◽  
Bone Width ◽  
Mandibular Posterior Teeth ◽  
Molar Region ◽  
Bone Dimensions

ABSTRACT Aim The aim of this study was to analyze bone dimensions of the dentate posterior mandible using cone beam computed tomography (CBCT). Objectives The objectives of this study were • To measure thickness of buccal and lingual bone walls in mandibular posterior teeth using CBCT. • To measure alveolar bone width in mandibular posterior teeth using CBCT. Materials and Methods Ten CBCT scans were included in the study (n = 65 teeth). Thicknesses of buccal and lingual walls were measured at measurement point 1 (MP1) and measurement point 2 (MP2). Alveolar width was assessed at most coronal detected alveolar bone (BW1) and at superior border of mandibular canal (BW2). Vertical distance between BW1 and BW2 was measured (H). Data were tabulated and results were statistically analyzed using unpaired t test. Results The study showed that there was an increase in bone wall thickness from 1st premolar to 2nd molar for buccal and lingual alveolar plates. Lingual bone walls were thicker than buccal bone walls at MP1 and MP2 for all teeth. Bone width for premolars was considerably less than bone width of molars. Conclusion Careful preoperative analysis using CBCT is important to assess need of bone augmentation procedures. As the bone thickness and width in the molar region is more adequate, prognosis of implants placed in molar region may be better. Clinical significance Analysis of bone dimensions is of utmost importance for successful outcome of bone augmentation procedures in implant treatment. How to cite this article Kunte VR, Bhoosreddy AR, Bhoosreddy SA, Pandharbale AA, Shinde MR, Ahire BS. Alveolar Bone Dimensions of Mandibular Posterior Teeth using Cone Beam Computed Tomography: A Pilot Study. J Contemp Dent 2016;6(1):9-14.

Availability of caecal habitat as a density-dependent limit on survivorship ofLeptorhynchoides thecatusin green sunfish,Lepomis cyanellus

Parasitology ◽  
1989 ◽  
Vol 98 (3) ◽  
pp. 447-450 ◽  
Author(s):  
Julie A. Ewald ◽  
B. B. Nickol
Keyword(s):  
Post Infection ◽  
Alimentary Tract ◽  
The Other ◽  
Anterior Portion ◽  
Lepomis Cyanellus ◽  
Significant Difference ◽  
The Mean ◽  
Green Sunfish ◽  
The Relationship ◽  
Leptorhynchoides Thecatus

SUMMARYDistribution ofLeptorhynchoides thecatus(Acanthocephala: Rhadinorhynchidae) among the pyloric caeca and the relationship between site and rate of maturation were studied in laboratory infectons of 10, 25 and 40 cystacanths fed to green sunfish,Lepomis cyanellus. After 1 week fish fed at each intensity had significantly different numbers of worms. By the 3rd week post-infection, parasites disappeared from the anterior portion of the intestine. At this time the mean numbers of worms recovered from 25 and 40-cystacanth infections were not significantly different. At the end of the 1st week, the area where caeca join the alimentary tract (between caecal area) and caeca numbered 6 and 7 contained significantly more worms than the other sites. By the 3rd week post-infection only caecum 7 contained significantly more worms, and at 5 weeks there was no significant difference between the number of worms present in any caecum or the between caecal area. Initially worms in the more intense infections matured more slowly, but by the 3rd week post-infection there was no significant difference in the states of maturity. The rate of maturation was not related to the site occupied.

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